5-point harness – straps over both shoulders, both hips, and between the legs.
Side-impact protection – protects the baby during side collisions.
Energy-absorbing foam (EPS/EPP) – reduces shock in an accident.
Anti-rebound bar or load leg – prevents the seat from rotating or moving excessively.
Secure base – often uses ISOFIX/LATCH for safer installation – easier and more secure.
Seat belt installation – alternative when ISOFIX is not available.
Detachable base – allows easy clicking in and out of the car.